More Mysterious Craters Emerge in Russia

Less than a year after three massive craters as large as 250 feet wide were discovered in Siberia, experts say as many as 20 smaller craters may be dotting the north Russian landscape.

Satellite imagery shows that one of the large craters on the Yamal peninsula is actually now surrounded by about 20 smaller craters filled with water, according to the Siberian Times. The mysterious holes are thought to be related to climate change, as unusually warm temperatures in the area lead to...